. >> frustrated with the impasse, republican mcconnell said he called vice president biden, urging him to get involved. >> i'm concerned about the lack urgency here. i want erch to know i'm willing to get this done, but i need a dance partner. >> reporter: after a roller coaster of a weekend, the bottom line is, there is still no deal. although the white house says the president remains modestly optimistic and harry reid said they would work through the night. but of course time is almost out. >> and millions are americans are watching. jon carl at the white house tonight, jon, thank you. >> the president meanwhile making headlines with tough talk about gun control in his second term in the wake of the shootings in newtown, connecticut. you'll remember the president tearing up as he addressed the nation on the day of the shooting. today the president recalled that day. >> this is something that -- you know, that was the worst day of my presidency. it's not something that i want to see repeated. >> the president going on to say he supports banning assault rifles and high capacity clips,